Aso.Net Core 的配置系统Configuration

Lueng 2019-11-30 原文

Aso.Net Core 的配置系统Configuration

Aso.Net Core 的配置系统Configuration
- 01.Json文件的弱类型方式读取
- 02.Json文件的强类型获取方式

Aso.Net Core 的配置系统Configuration

1.以前的配置文件格式为XML

2.新版的配置文件格式支持 { json ,xml, ini, memory, command, env….. }

01.Json文件的弱类型方式读取

Json文件【Microsoft.Extensions.Configuration.Json】

添加配置文件json文件，并设置内容

{
  "DataBase": {
    "SqlServer": {
      "ConnectionString": "server=.;database=testdb;uid=sa;pwd=123;"
    },
    "MySql": {
      "IpAddress": "127.0.0.1",
      "port": 3306
    }
  },
  "endArray": [
    { "endId": 20 },
    { "endId": "30" }
  ]
}

获取数据

private static void Main(string[] args)
{
    IConfiguration configuration = new ConfigurationBuilder()
        .SetBasePath(Environment.CurrentDirectory)
        .AddJsonFile("AppSettings.json",true,true)
        .AddInMemoryCollection()
        .Build();
    var str1 = configuration["DataBase:SqlServer:ConnectionString"];
    var str2 = configuration["endArray:0:endId"];
    Console.WriteLine($"{str1}+---{str2}");
}

02.Json文件的强类型获取方式

1.添加引用【Microsoft.Extensions.Configuration.Binder】

2.GetValue方式获取

private static void Main(string[] args)
{
    IConfiguration configuration = new ConfigurationBuilder()
        .SetBasePath(Environment.CurrentDirectory)
        .AddJsonFile("AppSettings.json",true,true)
        .AddInMemoryCollection()
        .Build();

    //GetValue获取方式
    int val = configuration.GetValue<int>("endArray:0:endId");
    Console.WriteLine(val); 
}

3.实体映射方式

private static void Main(string[] args)
{
    IConfiguration configuration = new ConfigurationBuilder()
        .SetBasePath(Environment.CurrentDirectory)
        .AddJsonFile("AppSettings.json",true,true)
        .AddInMemoryCollection()
        .Build();
 
    //Bind 获取方式
    Root root=new Root();
    configuration.Bind(root);
    var ip = root.DataBase.MySql.IpAddress;
    var entid = root.endArray[0].endId;
    Console.WriteLine($"{ip}{entid}");
    //Get<T> 获取
    var root = configuration.Get<Root>();
    var ip = root.DataBase.MySql.IpAddress;
    var entid = root.endArray[0].endId;
    Console.WriteLine($"{ip}{entid}");
 
}
//这里是实体类  
 public class SqlServer
    {
        /// <summary>
        /// 
        /// </summary>
        public string ConnectionString { get; set; }
    }

    public class MySql
    {
        /// <summary>
        /// 
        /// </summary>
        public string IpAddress { get; set; }
        /// <summary>
        /// 
        /// </summary>
        public int port { get; set; }
    }

    public class DataBase
    {
        /// <summary>
        /// 
        /// </summary>
        public SqlServer SqlServer { get; set; }
        /// <summary>
        /// 
        /// </summary>
        public MySql MySql { get; set; }
    }

    public class EndArray
    {
        /// <summary>
        /// 
        /// </summary>
        public int endId { get; set; }
    }

    public class Root
    {
        /// <summary>
        /// 
        /// </summary>
        public DataBase DataBase { get; set; }
        /// <summary>
        /// 
        /// </summary>
        public List<EndArray> endArray { get; set; }
    }